Motor-car.



m; 760,556. PATENTED MAY 24, 1904.

'- A. PALMROS. Y

MOTOR OAR.

APPLIOATION 11mm SEPT. 6, 1900. N0 IODEL.

2 mum's-snarl.

WITNESSES 12v VENTOR v I I xi ndarpazmros Allomey THE NORRIS PzrERs ca.PNOTO-LITHOU WASHINGTON. D. c, \r

" UNITED STATES Patented May 2 4, 1904.

PATENT 1 OFFICE.

MANUFACTURING OF OHIO. 1

COMPANY, OF COLUMBUS, OHIO, A CORPORATION MOTOR-CAR.

srno'rmcazrroiv forming part tr Letters Patent No. 760,556, dated May24, 1904. 7

Application filed September 5, 1900. ri l Il 29,077. (No model.)

To all whom it may concern.-

Be it known that I, ALE ANDER PALMRos, a citizen of Finland, residing atColumbus, in the county of Franklin and State of Ohio, -have inventedcertain new and useful "Improvements in Motor-(Jars, of which thefollowing is a specification, reference being had therein to the"accompanying drawings. In order to make my invention more clearlyunderstood, I have shown in the accompanying drawings means for carryingit intopractical efifect wlthout llmltlng my n'nprovements in theiruseful applications to the particular construction whichfor the sake ofillustration I have delineated.

In salddrawlngs, Figure 1 1s a slde View of an electric locomotiveembodyingmy invention. Fig. 2 is a plan view, partly in section,

on line II II, Fig. 1. Fig. 3 is aside view of the driving-wheels andthemeansfor connect ing them to each other and to the frame.

. Fig. is a vertical section on line IV IV, Fig. 2.

Referring to the drawings, the main frame of the locomotlve is composedof'side bars or frames A A and end bars B B, fitting the former at thelowerparts of their end faces and having inwardly extending verticalflanges which lie within the side frames and are secured thereto bybolts a; cast or otherwise constructed of great strength and weight togive the necessary tractionpower.

The side frames are each formed with three or more spaces a a a -toaccommodate the suspension devlces, herelnafter descrlbed, and

between said spaces with vertical bars or col- On the tops of the boxesare supported I These parts are I springs F, located in the longitudinalplanes of the frames AA in the upper parts of the spaces a a and securedby boxes, straps, or

brackets f, which surround and are attached to the springs and areseated in recesses e ml the journal-boxes. At their ends said springsare connected with suspension-bars G G, as by means of apertures f,provided in the versely in'the bars and resting in recesses f in theupper sides of the ends of the springs. The said suspension-bars form aseries, occupying portions 'of the spaces a a the end bars G of whichare connected with the main frame of the locomotive. Such a connectionis conveniently effected by forming the frames and weight the frames A Aare formed with vertical longitudinal webs a=at the inner sides of thespacesa a and connecting the guides a with the bodies of the frames, andto balance the strain on the pins 9 the inner ends of the latter areseated also in apertures a in the webs a"; The pins may be held in placeby heads on theirouter and cotter-pins in their ends. The strains ofthesprings on the bars G are transmitted from one to the other of saidbars, as the strains vary and are equal ized through movableconnections. In the construction illustrated said connections compriselevers H, each having a substantially central fulcrum on a transversepin h, seated in an aperture a in the side frame and secured in place bya cotter-pin 72,.

The guides a are connected at their lower ends by strap-bars a, securedto the frame by bolts a. i

The wheels D D and D D are formed with flanges d, while the intermediatepair of wheels D D are without flanges and engage only the top surfacesof the'rails.

The equalizing mechanism herein described springs, through which saidbars G pass, and

jby cross-pieces, pins, or saddles g, fixed transis much superior to anyof the sorts heretofore known as concerns use with a motor-ear orelectric locomotive of the character of that herein presented. Cars likethe present one are intended for use in mines and similar places wherethe track is narrow, has many sharp curves, is irregularly laid, andfrequently covered by obstructions, such as pieces of coal, rock, andthe like. The cars must be exceedingly short and the parts thereof verycompactly arranged in small compass. They must be very heavy in order toprovide sufficient traction. By employing the intermediate unflangedwheels D, I am enabled to prevent the loss of traction efficieney, forif either of the driving-wheels D or D should move up or escape from therails its motion and the momentum of the neighboring part of the ear isinstantly transferred to the intermediate wheel and more or less to theother driver.

In another respect the ear herein differs from the earlier constructionsemploying equalizersnamely, in this that each of the axles and its pairof wheels are driven independently of the others, there beingindependent motors I, I, and I geared to the axles, respec'tively. Themotors are arranged as shown, those at I and I extending in onedirection and that at I in the opposite direction, whereby there is leftan open chamber or space at I to receive the driver and wherein can beplaced the several levers and operating devices, such as those forcontrolling the motors, the brake mechanism, &c. As the central wheels DD are unflanged, the binding or cramping of the car when turning sharpbends is obviated.

What I claim is 1. In a motor-car, the combination of the body or mainframe having the side framepieces formed with chambers to provide spacesto accommodate the wheel-suspension devices, such spaces being arrangedwithin the outside and inside wall-faces of the frame-pieces, and beingalso provided with journal box guides, the axles extending from one ofthe said spaces to the opposite one, the wheels arranged in pairs uponthe axles, and the equalizingmeehanism interposed between the wheels andthe car-body and arranged in the said spaces, substantially as setforth.

2. In a motor-ear, the combination of the body having the sideframe-pieces formed with chambers opening outward to provide spaces inwhich are mounted the wheel-suspension devices, such spaces beingbetween the planes including the outside and inside wall-faces of theside frames, and being separated by the vertical bars a the journal-boxguides arranged outside the said spaces, the axles extending from onespace to the opposite one, the wheels arranged in pairs upon the axles,the journal-boxes arranged in the said guides in which the axles aremounted, and the equalizing mechanism interposed between the wheels andthe car-body and arranged in the said spaces, substantially as setforth.

3. In a motor-car or locomotive adapted for use in mines, thecombination of an inclosing main frame, the lower edges of the sides ofwhich come close to the track, and which sides are formed with externalchambers or recesses, the motor devices arranged within the inelosingframe, the traction-wheels, and the suspension devices arranged betweenthe wheels and the frame and situated within the said recesses orchambers, substantially as set forth.

4. In a locomotive or motor adapted for use in mines, the combination ofthe main frame having the side frames formed with the verticallongitudinal webs a", outside of which are arranged chambers orrecesses, the motor devices arranged inside of the said webs, thetraction-wheels, the supporting-axles of which pass through the saidwebs, and the suspension devices arranged between the tractionwheelaxles and the frame and situated in the said recesses or chambers,substantially as set forth.

5. In an electric locomotive of the elassdescribed, the combination of alocomotiveframe, three axles, means for holding said axles permanentlyin parallel transverse planes, the unflanged wheels on the intermediateaxle, the flanged wheels on the other two axles, three independentmotors, each eonneeted with one of the axles and driving itindependently of the others, and the equalizing-spring-supporting systeminterposed between the loeomotive-frame and the said axles,substantially as set forth.

6. In a motor-ear the combination of the body or main frame, two outerdriving-axles, two independent motors independently geared to said outeraxles respectively, the two pairs of the flanged driving-wheels one pairon each of said axles, the third axle intermediate of the two outeraxles, the unfianged track-engaging wheels secured to the ends of theintermediate axle, the independent journalboxes for the said axlesmounted in vertically-disposed ways, and equalizing devices arrangedbetween the journal-boxes of the flanged wheels and the journal-boxes ofthe unfianged wheels, substantially as set forth.

7. In a motor or locomotive, the combi nation of the main frame, thetraction wheels arranged in transversely-disposcd pairs, one pair inadvance of the other, independent vertically-movable journal-boxes forthe wheelaxles, supporting-springs arranged between the journal-boxesand the frame, equalizing devices arranged between the springs of onepair of wheels and those of the other pair, and independent motors, onefor each of the said pairs of wheels, the wheels being unconnected,whereby they may be driven independently, substantially as set forth.

8. In a motor or locomotive, the combination of three pairs of wheelsand their carryingaxles, independent vertically-movable supports inwhich the said axles are mounted, springs arranged between the severalaxles and the frame of the motor, equalizing devices arranged betweenthe two outer axles and the intermediate axle, and independent motorsfor each of the said axles and pairs of wheels, the wheels beingnon-coupled whereby the wheels may be driven independently and wherebyeach pair of wheels is adapted to follow the track independently of theother pair, substantially as set forth.

9. Inan electric locomotive of the class described the combination of alocomotive-body, three axles, means'for holding said axles in transverseplanes permanently parallel to each other, a pair of track-wheels oneach axle, the three track-wheels on each side of the locomotive beingheld permanently in the same longitudinal planes, three electric motorseach connected with an axle and driving it independently of the others,an equalizing-springsupporting system for said axles interposed betweenthem and the main frame, said equalizing system being at .its endsflexibly connected to the main frame and pivoted to the scribed, thecombination of the locomotivebody having an iron side wall formed with at series of cavities in its outer face, three axles mounted in the saidbody and held permanently in transverse planes parallel to each other,vertically-movable boxes for said shafts respectively,- a spring bearingupon each box andarranged within one of the said cavities in the ironside wall, a pair of links for each spring arranged within one of thesaid cavities, and levers pivoted to the said wall on axes between thesaid boxes, the outer links of series being pivoted to the said wall andthe intermediate links being respectively connected to the springs andto the levers, substantially as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.Y

ALEXANDER PALMROS. Witnesses LOTA I. SAYLOR, GEO. HUToHINs.

